HR641 is a supergiant star in the constellation of Perseus.
HR641 visual magnitude is 6.44. Because of its reltive faintness, HR641 should be visible only from locations with dark skyes, while it is not visible at all from skyes affected by light pollution.
The table below summarizes the key facts about HR641:
HR641 is above the horizon from Greenwich, United Kingdom .
Celestial coordinates and finder chart of HR641
HR641 is situated north of the celestial equator, as such, it is more easily visible from the northern hemisphere. Celestial coordinates for the J2000 equinox as well as galactic coordinates of HR641 are provided in the following table:
The simplified sky map below shows the position of HR641 in the sky:
Visibility of HR641 from your location
Location: Greenwich, United Kingdom
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
HR641 is circumpolar and transits at 09:11 UTC (altitude: 82.9°)
Digitized Sky Survey image of HR641
The image below is a photograph of HR641 from the Digitized Sky Survey 2 (DSS2 - see the credits section) taken in the red channel. The area of sky represented in the image is 0.5x0.5 degrees (30x30 arcmins). The proper motion of HR641 is -0.012 arcsec per year in Right Ascension and 0.02 arcsec per year in Declination and the associated displacement for the next 10000 years is represented with the red arrow.
Distance of HR641 from the Sun and relative movement
HR641 is distant 2,884.96 light years from the Sun and it is moving towards the Sun at the speed of 41 kilometers per second.
Spectral properties of HR641
HR641 belongs to spectral class A3 and has a luminosity class of I corresponding to a supergiant star.
The red dot in the diagram below shows where HR641 is situated in the Hertzsprung–Russell diagram.